Brake.



T. J. MULLBN & T. F. @L N1. J. BRENNAN.

BRAKE.

APPLIOATION FILED MAY 21, 1908.

Patented Nov. 24, 1908.

@SHEETS-SHEET 1.

T. J. MULLBN & T. F. L M. J. BRENNAN.

BRAKE.

A-PPLIOATION FILED MAY 21, 190s.

T. J. MULLEN & T. P. & M. J. BRENNAN.

BRAKE.

APPLICATION FILED MAY 21, 1908.

Patnted N ov. 24, 1908y 6 SHFETS-SHBET 3.

T. J. MULLEN & T. I. & J'. BRENNAN.

BRAKE.

6 SHEETS-SHEET 4.

oa 0 9 1 Hd 2 V. 0 N. d e LIU D 8 b a D..

Qnuahfozs wihwooeo T. J. MULLEN L T. F. 6L M. J. BRENNAN.

BRAKE.

APPLIOATION FILED MAY 21.1908.

Patented Nov. 24, 1908.

6 SHEETS-SHEET 5.

@mi h1 cosas T. J. MULLEN & T. F. & M. J.BRENNAN.

BRAKE.

A'PPLIoATIoN FILED MAY 21, 1908.

Patented Nov. 24, 1908. 8 SHEETS-SHEET 6.

ithtittf@ ,PATENT OFFICE..

THOMAS J. MULLEN, THOMAS F. BRENNAN, AND MICHAEL J. BRENNAN, OF NEW )'(JRK, N. Y.

BRAKE.

Specification of Letters Patent.

Patented Nov. 24, .1908.

Application led Mey 21., 1908. Serial No. 43.4205.

T o all trimm. lit may concer/n:

l w Be ity known that we, THOMAS J. MULLEN, luonis 1*. unxxxx. and MICHAEL J. BREN- xiN, citizens otl the Urited States, residing at Xew York, in the county of New York and State of New York, haveinvented certain new and useful l mprovements in Brakes; and we lo hereb)y declare the following to be a tall. clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in braking apparatus for vehicles, and particularly for cars ol' variousl kinds, and has tor an object the provision of a brake comprising a braking wheel and means for gripping or bringing into frictional contact therewith a brake shoe.

Another object in view -is the provision of a braking` mechanism comprising a brake wheel. a brake shoe adapted to engage the wheel, means for pivotally supportingl the brakeshne, and means for giving a direct pull upon the shoe for bringing thc same into 'lrictional contact with the brake wheel. further object of the invention is the provision of a braking mechanism arranged to brake all the wheels otl a truck and to give an even pressure to. the braking mechanism for each set of wheels and to give a direct pull upon the braking mechanism for utilizing substantially all of the power at the point desired.

A still further object of the invention is the provisionof a' braking' mechanism having a braking` shoe anda direct. pull therefor in combination with a rock shaft and connecting meclianism, whereby motion may be transmitted from said rock shaft to said brake shoe.

ll'ith these and other objects in View the invention comprises certain novel constructions` combinations and-arrangement of parts as will be hereinafter. more fully described and claimed.

Vlin the accompanying drawing: Figure 1 is a top plan view of a car truck with braking mechanism formed according to the present inventiini applied thereto. Fig. 2 is a section through Fig. 1 approximately on line 2# Fig. El is a section approximately on line KAS of Fig. 2. Fig. ll is a` side View ol" a bratfe shoe formed according to the present invention, certain surrounding parts beshown in dotted lines. Fig. 5 isa sectionthrough Fig. l approximately on line 5-5, Fig. 6 is a side elevation of a slightly modilied form of equalizing bar shown in connection with the preferred form of braking mechanism. Fig. 7 is a fragmentary to 3 plan view of slightly 7modified form of equa izing mechanism. Fig. 8 is a fragmentary top plan View 'of a truck showing an equalizing mechanism embodying a slightly modified construction to that shown in Fig. T, certain parts being removed for the purpose of illustration. Fig. 9 is a plan view of the equalizing bar and chain shown in Fig. 7. Fig. 10 is an edge view of the modified equalizing mechanism shown in Fig. 8. Fig. 11 is a side elevation of a slightly modilied form of brake shoe and hanger therefor. Fig. 12 is a side elevation of the rocker shaft and depending lever member of the preferred form. Fig. 13 is an enlarged sectional perspective View of the depending vlevel. shown in Fig. 12. Fig. 14 is aside elevation of a brake wheel and 'friction bands, the friction bands being shown slightly separate from the wheel for the purpose of illustration. Fig. 15 is a side elevation of a slightly modified form of friction band, a brake wheel Aheilig shown in dotted lines in connection therewith. Fig. 16 is another modified form of friction rim havin shown in connection therewith in dotted lines a brake wheel. Fig. 1T is a still further modified form of frictionrim, a brake Wheel being shown `in dotted lines in connection therewith. Fig. 18 is a section through Fig. 15 on line 155-18. Fig. 19 is a section through Fig. 16 on line 19-19. Fig. 20 is a section through Fig. '1T on line Q0-Q0- y Referring to the drawing by numerals, 1 indicates a framework or truck of any desired or preferred construction, and 2 the wheels of the truck. An axle 3 for each pair of Wheels is provided in the usual manner and is of any usual or preferred construction. Secured to one of 'the axles 3 (Fig. 2) is a brake wheel 4 provided with an outer friction rim The friction rim 5 may be made from'cast iron or other material as may be desired and is secured in position by bolts G as clearlv seen in 2 and 3. The friction member or rim 5 is provided with a plurality of lugs or extensions 7 for spacing the rim from wheel l. so that any heat created in friction rim 5 will not be easily communicated to wheel 4. Securing `bolts 6 are adapted to pass through some En f. scemi is adapted, by its engagement with groove 8,

to prevent any side playing or motion to brake shoe 10 as the same engages the rim 5. In userim and wheel l torni a complete structure or brake wheel and the terinbrake wheel will be hereafter used to Vmean this entire structure. The brake shoe is au ranged with a lug or En 11 extending to the rearward and formed with bosses 12 and 13. 'I he fin 11 between the bosses 12 and 13 is bifurcated for receiving a rod or bar 14 which in turnreceives a spring 15. lSpring 15 is adapted to engage a stop .i6 that is adjustably secured to bar lll as, for instance, by threads, and by reason of the vcontact of spring 15 with stop 16 and a brace 17 a continuous tendency is given to brake shoe 10 to remain out of engagement with the brake wheel. A pair of supports 18 and 19 are adapted to hold brake shoe 10 in a correo position for 'engaging the brake wheel, a

bearing pin or shaft 20 passing through the respective members 18 and 19, the tin 11, and also bar lei, as clearly seen in Fig. 5. The supporting members 18 and 19 extend upward from pin 2O and are pivotally mounted at 21 to a support or bracket 22 that is rigidly secured to one of the cross pieces 23 of frame 1. The supports 18 and 19 also extend downward at 24 and are held spaced apart by a suitable sleeve. The eX- tensions 2e are adapted to be engaged by bifurcated rod or member 25 that has its branches pass on each side of the brake wheel for engaging the respective portion 2li of membersl and 19. Rod l25 is pivotally secured at 2S to a rod 27 that has a turn buckle 28 interposed therein for adording adjustment for the rod. Rod 27 is bifurcatedat 29 for receiving a lever 30 that is pivotally mounted at 31 therein. rlhe lever extends upward and passes between guides 32and is engaged by a rod 33 that entends to any desired place to be operated by any desired mechanism for applying 4the brake, the mechanism for `applying the brake being, for instance, hand crank or the plunger on? an air cylinder so that the brakes can. be 'tightened or loosened'rn the ordinary or usual manner. The guides 32 are secured; to cross bars 34 andy 35 otV the truck, and are provided with a centrally positioned block 36 :for 'limiting the movement 'of lever 30 when the saine is a released. position.

ivotally mounted at 3?' to lever ,30 is a link 38 (Fig. 2) 4that in turn is pivotally mounted at 39 toa crank or lever et?, the crank or lever l0 being rigidly secured to a cross bar 4:0 which is pivotally mounted at 41 and l2 in brackets i3 and le respectively.

an equalizing mechanism for equaliaing the pressure brought to bear upon the brakes of the truck.

The brake wheel` and 'connected inechan 'ism have been described and lettered in rela tion to wheel 3, and surrounding parts, but it is to be understood that wheel 5 at the opposite end and surrounding parts are eX- actly like wheel 3 and surrounding parte, efr-- cept that the saine is positioned at the opposite end of the truck, and will therefore need no additional description. The lever 30 which is similar to lever 30, except that it operates in the opposite direction is adapted to be moved by a rod 83 by any desired adapted to operatev the brake mechanism trom one end of the truck or car, as the case ate the brakes from the opposite direct-ion.

Rod :.i' which is similar to rod 27 is connected with the depending portion of a crank member by nieans of a chain l5 and crank or lever member it? is connected to rod 27' by means of chain 4:6. By this construct-ion and' arrangement and use of cy ains Ll5 and 46 a direct chain pull is given to the various brakes, when lever 30 is Inoving to apply the brakes, chain l5 pulling lfor applying the brakes at the opposite lend of the truck, and when lever 30' is moving for operating the brakes, chain t? pulling upon-. rod 27 for applying the brakes at that end or' the car. By this construction and arrangement any power brought to bear upon lever 30 will be equally divided between the brake shoes at each' end, of the truck for equally applying the shoes to their respecdirect pull uponth`e brake shoe and Ione of the chains giving a direct pull upon the opposite brake shoe, whereby substantially all or0 the power used will be conveyed directly to the brake shoe.

in Figs.v 6, 7 and 9. a slightly modied :torni of Aequalizing bar is shown used with the preferred forni of brake wheel and surrounding mechanism. Referring more particularly to these views, l? is a cross bar pivotally mounted in brackets i8 and 49, and has rigidly secured thereto' pulleys or preferably constructed square, and thelpulleys and 51 made to contorni thereto so as to positively insuregagalnst any slipping of also secured in 'place by suitable setscrews I so as toprevent any longitudinal nioveinent This bar 4.0 and its cranks or levers el@ torni f brake operating mechanism, rod 33 being may be, and rod 33 being adapted to open tive brake wheels, one of the levers giving a grooved wheels 50 and The shaft 4.-? is y the pulleys. l'n addition pulleys are .1

of the saine upon the bar 47. Connected with the pulleys and 51 are chains 52 and 53 which are also in turn connected to levers 30 and 30') respectively. as clearly seen in Fig. (i. i\ rod is provided which 'is adapted to act similarly to rod 33 it'or moving lever i501. lever 30" similar to 3U but on the opposite .side of sha t't 4T and adapted to operate iu the opposite direction is conuected with shaft l'i' hy means or chain 53 and grooved wheel'51. Connected to the upper end o1 lever 30b is a rod 5o that is adapted to move lever 30" iu a .similar mauner to the way rod 55 moves lever 3011, ihe rod 5G beine' operated from the opposite end ol the ear to rod 55. lliturcated leversl 57 and 5S are positioned upon bar l?. llever 5T is adapted to havesecured thermo a chain 50 which in turn is secured to rod 2T at (3() in order to communicate power from shaft 47 to rod 2T when lever 30 is being,r operated. A chain o1 is secured to lever 5S and to rot. 27 so that Whenever lever 3S is be.- mg operated power will he communicated therefrom through shaft -lT to rod 27. These chains 5l) and (5l relieve the stop or block 62, because it' these elia ins were not arranged as set lorth any strain brought upon chain by reason of the movement. of lever lO: -would cause lever 230* to be it'oreed tightly against block ($2. By this construetion und arrangement ot' pulleys, rock shaft. and chains. a ,lirect chain pull is given to the brakes, and also a structure is presented which may be operated from either end ot' the car for giving such direct pull upon the brake shoes.

In Figs. S and l0 is presented a :further modilied construction ot equalif/ing mechanism that is adapted to be used with the, preferred construction of. brake Wheel and surrounding mechanism.` Referring;v more particularly to these figures, (323 indicates 'a bracket that is secured to the 1frame ot' the truck in any desired'manner. Bracket 63 nas a bracing bar (Si secured thereto as clearly seen in Fig. 10. It pair ot' pulleys and (S6 are horizontally mounted between brackets 623 rand braces Gl over which a chain (37 is passed. interposed intermediate the ends of chain 6T is a bar GS. This will necessitate the use or' only a short piece ot' chain t'or passing; around the respective pulleys (33 and tio. (lne end ot the chain is adapted to engage a lever as 3l) ot' the preferred construction, and the ot her lever 30. This con struetiou of chains conueeting;` rod 68 und snrrouxnling parts 'is adapted to be used with thenlevers il() and 30( of the preferred coustruction, together with all of the remaining mechanism. except the rocker har and links 3S. and dependingi lever il). TWhen using" the construction shown i'n Figs. 8 and l() one of the levers, as 30, is moved ioy a Tod, as 33, for moving rod 27. This will pull iii upon chain 67 Which will move tor a short distance around pulleys 65 and 66. and consequently convey motion from lever 30 to lever 30 which in turn will convey motion to rod 2T. lhen lever 30 is moved the motion ot. chain (S7 will be reversed in order that power may be applied to rody 2T .'l'o ap plying the brake.

Fig. 11 discloses a brake shoe (39 having a lin T() arranged with two lugs or journal portions 71. and 72. Pivolally mounted in journal member Tl is a hanger T13 that is pivotally mounted at T-l to a bracket T5 similar to briuket Member 7L is bi'l'ureated and is adapted to receive a bar Tl similar to bar ll. and also the bill'ureated ends ol' bar 'TT whieh is similar to har "33. ily this eonstruetion and arrangenmntv extension 2l ol' the pre'l'erredv structure may be dispensed with and .vet sullieient leverage provided itor Causingthe brake 35 to impine'e against the brake wheel to properly operate with an ordinary amount oiC power. This structure also liseloses a shoe which is pivotal v mounted upon a pivotally mounted support. and has a double pivotal movement as the same approaches the wheel.

By theI construction and arrangement ol a bra'ke wheel rigidly secured to the axle atyy desired size ot' brake wheel may be used, and also any desired sized brake shoe.fso that great brakingA power juni-y beeverted upon the traction wheels. ll will be ob served also that the various parts ol the brake mechanism are strongly made, and comparatively t'ew in number, so that the same is adapted to operate sueepssiulh.' will out easily getting out ol order. 'lhe use ol' a brake otz this kind'also prevents unnecessary wear upon the periphery of' the traction wheels of the vehicle, since the braking slvsteni does not engage the traction wheels in any way.- The braking' mechanism may be applied to any desired kind ot vehicles in common use, and to the trucks otl street or railway cars as may be desired. lt will also be observed that the rim 5 of a brake wheel is made into two parts so as to be easily applied and removed 'for repair. renewal. or for any other purpose.

Referring to Figs. Yl5 to 20 inclusive, there will be seen several forms of brake wheel friction rims. nFigs. 15 and 18 a brake rim formed of parts as 7S and T9 arey arranged with a curved periphery T9 and an inner Curved surface 80. The curved surfacey S() is adapted to lit the brake wheel and to be secured thereto by any desired means. as, 'tor instance, bolts. The periphery l is eurved and is adapted to receive a curved brake shoe. The curvingl ol the friction rim and the brake shoe presents a shoe that will not easily 'fail to make Contact, and also presents a shoe that has e. comparatively l se bearing surface. Fig. 16 shows a. friction rim dat outer surifzme 83 and a curved inner! surface 8e: the inner surface being ada ted to t a brake Wheel, and the outer surracebeing presented to the brake shoe. Fig.y 17

shows a still further mo'dine'd orm orp frio' 'tion rim-ormedin a plurality of parts 85 lil and 86. 'lihe parts 85 and 86 are formed with a v1 shaped groove 87 in the periphery and a dat surface 88 interiorly, the surface 88 contacting With the brake wheel and the outer surface or groove 87 being presented to the brake shoe which is `ormed With a corresponding 'ridge lfor tting into the groove portion 87.

Among 'the main features of the invention is the Way in which the tumbling or rocking cross center bar' acts.. This bar actsl as an equalizing bar and conveys-a pull from one brake Wheel to the other, and by reason of the chain makes a direct pull from the lever of the equalizing bar to the brake shoe. llhen one of the pull rods is operated a direct pull is given to the brake shoe on that side directly by the lever rod, and the brake shoe on the opposite side of the truck Will be given a direct pull by the chain secured to the rocker bar or equalizing' bar, the'chain on the side of the pull rod being operated being slack. lVhen the opposite pull rod is.

operated the opposite conditions prevail as will be evident. lt will also be noted that the brake is applied from either end of the truck and the upright pull lever is thrown back against the stop or stopping block on the opposite end.

Having thus fully described our invention, what We claim as new, and desire to secure bylfletters Patent is l. ln'a brake mechanism for vehicles, a plurality of brake Wheels secured to the Wheels. of the vehicles a brake shoe for each of said brake Wheels, suspending means for supporting said-brake shoes, rods bifurcated at their ends for giving a direct-pull uponV said brake shoes and on each' sidev thereoii;

the biurcated portions being :positioned astride said brake Wheel, and an, equalizing bar mounted to rock axially for acting on said rods. I A

2. The combination with a vehicle having a plurality ci axles and traction Wheels, of a brake mechanism comprising independent braiie Wheels secured to said axles, a brake 4sthoe.. adapted to engage each of lsaid brake wheels, a rod connected with each of said "b rake Wheels., a rod connected with each oi said brake shoes, an equalizing bar, means for connecting -said rod to said equal-12mg bar, andvmeans for rocking said equahzing bar ashally.

3. The combination with a vehicle having a plurality of arles. a brake ,Wheel 'for each ofsaid axles, a bra-he shoe or each or said .brake wheels, a rod connected with each of said rim from said wheel for preventing heat to be communicated Vfrom said rim to.I said Wheel, a brake shoe adapted to engage sllid rim, and means for operating said brake s ee.

f said rim to said Wheel, means for spacing ser 5. In a brake mechanism 'or vehicles, a 'i brake Wheel formed with a body portion, a movable friction rim, means countersunk in said movable frlction rim for securing sold* said rim and engagingsaid Wheel for spac- .ing said rim from said wheel, a brake shoe adapted to engage said brakevvheel, and' means for operatlng'said brake shoe.

6. 'A brake mechanism itor vehiclescomprising abrake 'wheel'formed with s body portion, a rictiorrrim divided intol a plurality of parts, each part being formed with' lugs projectingy 'therefrom for spacing the rim from the body portion oi the brake Wheel, removable means for removablyfffsecuring said rim to-said body portion, a brake shoe adapted tol engage said rim, and means for operating said" brake shoe.

. 7. ln abralre mechanism for vehcles,a

`rim' to said wheel, means projecting rom brake Wheel formed With a removable rim,

- means for rigidly securing said rim to said wheel, said rim being formed with a plurality of projections for spacing the body.

portion of said rim from said Wheel, abrake' shoe adapted to engage said brake Wheel, and means for operating said brake shoe.

8. A brake mechanism for vehicles com prising a brake Wheel formed with a body.-

portion, a removable rim provided with a Aplurality ofparts, means for securing said rim to said body .-portion, said rim being grooved centrally around its periphery, a brake shoe adapted to Contact with said rim, said brake shoe being formed with a ridgeprojecting om the face of seid brake shoe and registering with the groove on said rim, means for pivotally supportingsaid br/ake shoe, and means 'or applying said brake "12o '8" shoe to said brake Wheel.

9. lnf'a brake mechanism for vehicles, brake Wheels, a brake shoe or each of said brake Wheels., an equalizing bar for connecting said brake shoes, rocking lever, levers. -or operating said vbrake shoes, links connecting said levers and said equalizing' bar, means or operating said levrs, and` a stop for each of said levers for limitingthe movement of the eamo..

iis

10. In a vbrake mechanism for vehicles, brake wheels, a brake shoe for each of said brake wheels, a rod connected with each of said brake shoes, a lever connected with each of said rods for operating the same, an equalizing bar, links connecting saidv levers and said equalizin bar, operating means connected with sai levers, stops for limiting-.movement of said levers, and guiding means for guiding the movement of said levers.

l1. ln a brake mechanism for vehicles@ brake shoes, brake wheels by one o'the brake shoes, pair of rocking levers,

each engageable an equallzer bar, a hnks connecting each of the levers with the equalizer bar, connections between each of the levers and the respective brake shoes, an operating means connected with each of the levers, an arm carried by the equalizer bar, and loose connection between each of the levers and the arm.

In testimony whereof we affix our signa- -tures in presence of two Witnesses.

THOMAS J. MULLEN.

THOMAS F. BRENNAN.

MICHAEL J. BRENNAN. lVitnesses:

J. H. SEARLE, PATRICK REILLY. 

